A. 5%
B. 50%
C. 30%
D. 25%
Related Mcqs:
- The maximum a.c. power output from a class A power amplifier is 10 W. What should be the minimum power rating of the transistor used ?
A. 10 W
B. 15 W
C. 5 W
D. 20 W - The maximum efficiency of transformer coupled class A power amplifier is _______________?
A. 30%
B. 50%
C. 80%
D. 45% - A 2-transistor class B power amplifier is commonly called ______________ amplifier?
A. Dual
B. Push-pull
C. Symmetrical
D. Differential - What will be the collector efficiency of a power amplifier having zero signal power dissipation of 5 watts and a.c. power output of 2 watts ?
A. 20%
B. 80%
C. 40%
D. 50% - A class A power amplifier uses _________________?
A. Two transistors
B. Three transistors
C. One transistor
D. None of the above - In a single stage transistor amplifier, RC and RL represent collector resistance and load resistance respectively. The transistor sees a d.c. load of _____________________?
A. RC + RL
B. RC || RL
C. RL
D. RC - If RC and RL represent the collector resistance and load resistance respectively in a single stage transistor amplifier, then a.c. load is____________________?
A. RL + RC
B. RC || RL
C. RL – RC
D. RC - The output power of a transistor amplifier is more than the input power because the additional power is supplied by__________________?
A. Transistor
B. Biasing circuit
C. Collector supply VCC
D. None of the above - Low efficiency of a power amplifier results in_________________?
A. Low forward bias
B. Less battery consumption
C. More battery consumption
D. None of the above - Class_____________ power amplifier has the highest collector efficiency ?
A. C
B. A
C. B
D. AB
